ATE504981T1 - DETECTION AND REDUCTION OF INTERMODULATION DISTORTION - Google Patents

DETECTION AND REDUCTION OF INTERMODULATION DISTORTION

Info

Publication number
ATE504981T1
ATE504981T1 AT07800027T AT07800027T ATE504981T1 AT E504981 T1 ATE504981 T1 AT E504981T1 AT 07800027 T AT07800027 T AT 07800027T AT 07800027 T AT07800027 T AT 07800027T AT E504981 T1 ATE504981 T1 AT E504981T1
Authority
AT
Austria
Prior art keywords
intermodulation distortion
input signal
digital
reduction
detection
Prior art date
Application number
AT07800027T
Other languages
German (de)
Inventor
Daniel Filipovic
Christos Komninakis
Original Assignee
Qualcomm Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qualcomm Inc filed Critical Qualcomm Inc
Application granted granted Critical
Publication of ATE504981T1 publication Critical patent/ATE504981T1/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • H04B1/109—Means associated with receiver for limiting or suppressing noise or interference by improving strong signal performance of the receiver when strong unwanted signals are present at the receiver input
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • H04B1/12—Neutralising, balancing, or compensation arrangements
    • H04B1/123—Neutralising, balancing, or compensation arrangements using adaptive balancing or compensation means
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/30—Circuits for homodyne or synchrodyne receivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/50—Circuits using different frequencies for the two directions of communication
    • H04B1/52—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
    • H04B1/525—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa with means for reducing leakage of transmitter signal into the receiver

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Noise Elimination (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Radio Transmission System (AREA)
  • Superheterodyne Receivers (AREA)
  • Transmitters (AREA)
  • Transceivers (AREA)
  • Telephone Function (AREA)
  • Amplifiers (AREA)

Abstract

Techniques for detecting and mitigating intermodulation distortion (IMD) are described. A device (e.g., a cellular phone) obtains digital intermodulation distortion and digitally determines intermodulation distortion in an input signal based on the digital intermodulation distortion. The device may correlate the digital intermodulation distortion with the input signal and determine intermodulation distortion in the input signal based on correlation results. The device may adjust the operation of one or more circuit blocks (e.g., a mixer, an LNA, etc.) in a receiver based on the detected intermodulation distortion in the input signal. Alternatively or additionally, the device may condition the digital intermodulation distortion to obtain conditioned intermodulation distortion matching intermodulation distortion in the input signal and may then subtract the conditioned intermodulation distortion from the input signal.
AT07800027T 2006-08-08 2007-08-07 DETECTION AND REDUCTION OF INTERMODULATION DISTORTION ATE504981T1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US83660806P 2006-08-08 2006-08-08
US11/693,968 US7876867B2 (en) 2006-08-08 2007-03-30 Intermodulation distortion detection and mitigation
PCT/US2007/075337 WO2008021815A1 (en) 2006-08-08 2007-08-07 Intermodulation distortion detection and mitigation

Publications (1)

Publication Number Publication Date
ATE504981T1 true ATE504981T1 (en) 2011-04-15

Family

ID=38739415

Family Applications (1)

Application Number Title Priority Date Filing Date
AT07800027T ATE504981T1 (en) 2006-08-08 2007-08-07 DETECTION AND REDUCTION OF INTERMODULATION DISTORTION

Country Status (9)

Country Link
US (1) US7876867B2 (en)
EP (1) EP2057745B1 (en)
JP (1) JP5155314B2 (en)
KR (1) KR101070573B1 (en)
CN (1) CN101502007B (en)
AT (1) ATE504981T1 (en)
DE (1) DE602007013771D1 (en)
TW (1) TW200818797A (en)
WO (1) WO2008021815A1 (en)

Families Citing this family (120)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2036210A2 (en) * 2006-05-19 2009-03-18 California Institute Of Technology Digital and analog im3 product compensation circuits for an rf receiver
US8098779B2 (en) 2006-08-08 2012-01-17 Qualcomm Incorporated Interference detection and mitigation
US8290100B2 (en) * 2006-08-08 2012-10-16 Qualcomm Incorporated Interference detection and mitigation
EP1968205A1 (en) * 2007-02-28 2008-09-10 Nederlandse Organisatie voor toegepast- natuurwetenschappelijk onderzoek TNO Signal quality determination in cable networks
JP4932623B2 (en) * 2007-07-09 2012-05-16 株式会社日立国際電気 Determination circuit, squelch device, and determination method
US9548775B2 (en) * 2007-09-06 2017-01-17 Francis J. Smith Mitigation of transmitter passive and active intermodulation products in real and continuous time in the transmitter and co-located receiver
TW200915744A (en) 2007-09-27 2009-04-01 Realtek Semiconductor Corp Transmitter and receiver for reducing local oscillation leakage and I/Q mismatch and adjusting method thereof
US8175540B2 (en) * 2008-01-11 2012-05-08 Ubinetics (Vpt) Limited Intermodulation distortion control
US8032102B2 (en) * 2008-01-15 2011-10-04 Axiom Microdevices, Inc. Receiver second order intermodulation correction system and method
US7916672B2 (en) * 2008-01-22 2011-03-29 Texas Instruments Incorporated RF processor having internal calibration mode
US8369812B2 (en) * 2008-03-20 2013-02-05 Honeywell International Inc. Method and system for detection of passive intermodulation interference emissions
EP2109317B1 (en) * 2008-04-10 2020-12-30 Sony Corporation Improving video robustness using spatial and temporal diversity
US8081929B2 (en) * 2008-06-05 2011-12-20 Broadcom Corporation Method and system for optimal frequency planning for an integrated communication system with multiple receivers
US8112055B2 (en) * 2008-06-26 2012-02-07 Intel Corporation Calibrating receive chain to reduce second order intermodulation distortion
US8855580B2 (en) * 2008-06-27 2014-10-07 Telefonaktiebolaget L M Ericsson (Publ) Methods and apparatus for reducing own-transmitter interference in low-IF and zero-IF receivers
US8060043B2 (en) * 2008-10-09 2011-11-15 Freescale Semiconductor Adaptive IIP2 calibration
CN101420246B (en) * 2008-11-21 2013-09-11 华为技术有限公司 Method, apparatus and transceiver for counteracting transmission interference by the transceiver
US8090320B2 (en) * 2008-12-19 2012-01-03 Telefonaktiebolaget Lm Ericsson (Publ) Strong signal tolerant OFDM receiver and receiving methods
JP2010171724A (en) * 2009-01-22 2010-08-05 Sharp Corp Radio communication apparatus, radio communication method and program
JP4842342B2 (en) * 2009-03-23 2011-12-21 ルネサスエレクトロニクス株式会社 Radio transmission / reception device and method for measuring transmission power of radio transmission / reception device
WO2011004578A1 (en) * 2009-07-06 2011-01-13 パナソニック株式会社 Nonlinear distortion compensating receiver and nonlinear distortion compensation method
CN101697477B (en) * 2009-10-28 2011-12-28 深圳市云海通讯股份有限公司 System, method and power amplifier circuit for regulating linearity of output signal of power amplifier circuit
US20110105037A1 (en) * 2009-10-30 2011-05-05 Qualcomm Incorporated Methods and systems for interference cancellation in multi-mode coexistence modems
US8576965B2 (en) * 2009-10-30 2013-11-05 Qualcomm Incorporated Methods and systems for interference cancellation in multi-mode coexistence modems
US8320866B2 (en) * 2010-02-11 2012-11-27 Mediatek Singapore Pte. Ltd. Integrated circuits, communication units and methods of cancellation of intermodulation distortion
US8320868B2 (en) * 2010-02-11 2012-11-27 Mediatek Singapore Pte. Ltd. Integrated circuits, communication units and methods of cancellation of intermodulation distortion
CN101795141B (en) * 2010-02-22 2013-11-27 北京航空航天大学 Distribution method of third-order intermodulation distortion parameter applied inside receiver radio-frequency system circuit
US8649464B2 (en) * 2010-08-10 2014-02-11 Sony Corporation Quadrature receiver and method of compensating for I/Q imbalance using a calibration signal
US8477860B2 (en) 2010-08-27 2013-07-02 Telefonaktiebolaget L M Ericsson (Publ) OFDM signal reception in the presence of interference
US9002310B2 (en) * 2010-09-28 2015-04-07 Intel Mobile Communications GmbH IP2 calibration methods and techniques
US9325360B2 (en) * 2010-09-28 2016-04-26 Qualcomm Incorporated Reducing non-linearities in a differential receiver path prior to a mixer using calibration
US9398464B2 (en) 2011-07-11 2016-07-19 Commscope Technologies Llc Base station router for distributed antenna systems
AU2012308170B2 (en) 2011-09-15 2017-02-23 Andrew Wireless Systems Gmbh Configuration sub-system for telecommunication systems
WO2013040579A1 (en) 2011-09-16 2013-03-21 Andrew Wireless Systems Gmbh Integrated intermodulation detection sub-system for telecommunications systems
KR101873754B1 (en) * 2011-11-25 2018-07-04 한국전자통신연구원 Radio frequency receiver
GB2488201B (en) 2012-01-27 2013-04-10 Renesas Mobile Corp Power control
US9203664B2 (en) * 2012-02-22 2015-12-01 Broadcom Corporation Measurement of intermodulation products of digital signals
GB2502279B (en) * 2012-05-21 2014-07-09 Aceaxis Ltd Reduction of intermodulation products
GB2502281B (en) * 2012-05-21 2014-11-26 Aceaxis Ltd Detection of intermodulation products
US9374115B2 (en) * 2012-05-24 2016-06-21 Telefonaktiebolaget Lm Ericsson (Publ) Method, base station and apparatus in a base station for reducing intermodulation distortion
CN104471881B (en) * 2012-07-18 2016-12-14 诺基亚通信公司 Detection affects the intermodulation in broadband connections of receiver sensitivity
WO2014040608A1 (en) 2012-09-14 2014-03-20 Andrew Wireless Systems Gmbh Uplink path integrity detection in distributed antenna systems
EP2904831B1 (en) 2012-10-05 2017-10-04 Andrew Wireless Systems GmbH Capacity optimization sub-system for distributed antenna system
US8917792B2 (en) 2012-12-12 2014-12-23 Motorola Mobility Llc Method and apparatus for the cancellation of intermodulation and harmonic distortion in a baseband receiver
US8995932B2 (en) * 2013-01-04 2015-03-31 Telefonaktiebolaget L M Ericsson (Publ) Transmitter noise suppression in receiver
US9077440B2 (en) 2013-01-04 2015-07-07 Telefonaktiebolaget L M Ericsson (Publ) Digital suppression of transmitter intermodulation in receiver
US8964608B2 (en) * 2013-01-11 2015-02-24 Futurewei Technologies, Inc. Interference cancellation for division free duplexing or full duplex operation
US9252831B2 (en) * 2013-03-01 2016-02-02 Qualcomm Incorporated Multi-tap adaptive filter for transmit signal leakage cancellation
US9787415B2 (en) * 2013-03-14 2017-10-10 Analog Devices, Inc. Transmitter LO leakage calibration scheme using loopback circuitry
US9231801B2 (en) 2013-03-15 2016-01-05 Qualcomm Incorporated Adaptive non-linear interference cancellation for intermodulation distortion
US8942656B2 (en) 2013-03-15 2015-01-27 Blackberry Limited Reduction of second order distortion in real time
EP2779562B1 (en) * 2013-03-15 2018-12-26 BlackBerry Limited Reduction of second order distortion in real time
GB201313066D0 (en) * 2013-07-22 2013-09-04 Aceaxis Ltd Processing interference in a wireless network
US9596120B2 (en) * 2013-09-26 2017-03-14 Nec Corporation Signal transmission apparatus, distortion compensation apparatus, and signal transmission method
US9544807B1 (en) * 2013-11-21 2017-01-10 Sprint Spectrum L.P. Methods and systems for varying rate of transmitting sequences of master information blocks based on wireless network conditions
CN103618503A (en) * 2013-12-18 2014-03-05 上海艾为电子技术有限公司 Amplifier circuit and control circuit and control method thereof
CN103618505A (en) * 2013-12-18 2014-03-05 上海艾为电子技术有限公司 Amplifier circuit
CN103618504A (en) * 2013-12-18 2014-03-05 上海艾为电子技术有限公司 Amplifier circuit and control circuit and control method thereof
GB201406340D0 (en) 2014-04-08 2014-05-21 Analog Devices Technology Dominant signal detection method and apparatus
EP2930854B1 (en) * 2014-04-08 2020-05-20 Analog Devices Global Unlimited Company Unwanted component reduction system
GB201406346D0 (en) 2014-04-08 2014-05-21 Analog Devices Technology Unwanted component reduction system
WO2015166308A1 (en) * 2014-05-01 2015-11-05 Telefonaktiebolaget L M Ericsson (Publ) Passive intermodulation detection
US9615369B2 (en) * 2014-05-14 2017-04-04 Qualcomm Incorporated Avoiding spurious responses with reconfigurable LO dividers
US9525453B2 (en) 2014-06-10 2016-12-20 Apple Inc. Intermodulation cancellation of third-order distortion in an FDD receiver
KR101569726B1 (en) 2014-06-19 2015-11-18 주식회사 에이스테크놀로지 Method and Device for Canceling Passive Intermodulation Signal
US9961632B2 (en) 2014-09-26 2018-05-01 Apple Inc. DSP assisted and on demand RF and analog domain processing for low power wireless transceivers
US9826263B2 (en) 2014-10-22 2017-11-21 Arcom Digital, Llc Detecting CPD in HFC network with OFDM signals
US9660856B2 (en) * 2015-02-25 2017-05-23 Linear Technology Corporation Distortion compensation circuit
DE102015104811B4 (en) * 2015-03-27 2024-07-18 Apple Inc. A receiver and a method for reducing a distortion component related to a baseband transmit signal in a baseband receive signal
CN104883229B (en) * 2015-03-27 2017-03-01 北京理工大学 A kind of code division multibeam signals separation method based on FDMA system
EP3799317B1 (en) * 2015-04-24 2022-11-16 Andrew Wireless Systems GmbH Circulator distortion cancellation subsystem
US9998158B2 (en) 2015-05-27 2018-06-12 Finesse Wireless, Inc. Cancellation of spurious intermodulation products produced in nonlinear channels by frequency hopped signals and spurious signals
US20160380668A1 (en) * 2015-06-26 2016-12-29 Fujitsu Limited Communication device and receiving method
US9603155B2 (en) * 2015-07-31 2017-03-21 Corning Optical Communications Wireless Ltd Reducing leaked downlink interference signals in a remote unit uplink path(s) in a distributed antenna system (DAS)
JP2017059963A (en) 2015-09-15 2017-03-23 富士通株式会社 Radio equipment and distortion cancellation method
GB2542625B (en) * 2015-09-28 2021-06-09 Tcl Communication Ltd Transceiver devices
US9590668B1 (en) 2015-11-30 2017-03-07 NanoSemi Technologies Digital compensator
WO2017106209A1 (en) 2015-12-13 2017-06-22 GenXComm, Inc. Interference cancellation methods and apparatus
US10277381B2 (en) * 2016-01-09 2019-04-30 Huawei Technologies Co., Ltd. Receiver path distortion mitigation using adaptive filter feedback
EP3427388B1 (en) 2016-03-07 2024-05-01 Telefonaktiebolaget LM Ericsson (publ) Non-linear interference detection
US10038462B2 (en) * 2016-05-13 2018-07-31 Mediatek Inc. Digital cancellation of receiver nonlinear distortion in carrier aggregation systems
US10257746B2 (en) * 2016-07-16 2019-04-09 GenXComm, Inc. Interference cancellation methods and apparatus
EP3523856A4 (en) 2016-10-07 2020-06-24 NanoSemi, Inc. Beam steering digital predistortion
US9894612B1 (en) 2016-11-03 2018-02-13 Corning Optical Communications Wireless Ltd Reducing power consumption in a remote unit of a wireless distribution system (WDS) for intermodulation product suppression
US11057004B2 (en) 2017-02-25 2021-07-06 Nanosemi, Inc. Multiband digital predistorter
CN107026664B (en) * 2017-03-07 2019-06-07 四川海格恒通专网科技有限公司 A kind of method of cancellation receiver Intermodulation Interference
US10594358B2 (en) 2017-04-21 2020-03-17 Futurewei Technologies, Inc. Leakage signal cancellation
JP6926639B2 (en) * 2017-04-27 2021-08-25 富士通株式会社 Distortion canceling device and distortion canceling method
US10141961B1 (en) * 2017-05-18 2018-11-27 Nanosemi, Inc. Passive intermodulation cancellation
US10931318B2 (en) * 2017-06-09 2021-02-23 Nanosemi, Inc. Subsampled linearization system
US11115067B2 (en) 2017-06-09 2021-09-07 Nanosemi, Inc. Multi-band linearization system
US10581470B2 (en) 2017-06-09 2020-03-03 Nanosemi, Inc. Linearization system
US11323188B2 (en) 2017-07-12 2022-05-03 Nanosemi, Inc. Monitoring systems and methods for radios implemented with digital predistortion
KR102019145B1 (en) * 2017-07-21 2019-11-04 주식회사 에스디솔루션 Apparatus for Remove of PIMD Using by System Synchronization
WO2019045729A1 (en) * 2017-08-31 2019-03-07 Intel IP Corporation Method and apparatus for iip2 calibration
WO2019070573A1 (en) 2017-10-02 2019-04-11 Nanosemi, Inc. Digital predistortion adjustment based on determination of load condition characteristics
US10333616B1 (en) 2018-01-17 2019-06-25 Arcom Digital, Llc Detecting burst PIM in downstream at drop
KR102023433B1 (en) * 2018-03-23 2019-11-14 주식회사 티제이이노베이션 intermodulation canceling device and its method
WO2019217811A1 (en) 2018-05-11 2019-11-14 Nanosemi, Inc. Digital compensator for a non-linear system
US10644657B1 (en) 2018-05-11 2020-05-05 Nanosemi, Inc. Multi-band digital compensator for a non-linear system
WO2019219185A1 (en) * 2018-05-16 2019-11-21 Telefonaktiebolaget Lm Ericsson (Publ) Interference mitigation
EP3804127A1 (en) 2018-05-25 2021-04-14 NanoSemi, Inc. Digital predistortion in varying operating conditions
US11863210B2 (en) 2018-05-25 2024-01-02 Nanosemi, Inc. Linearization with level tracking
US10931238B2 (en) 2018-05-25 2021-02-23 Nanosemi, Inc. Linearization with envelope tracking or average power tracking
US10616622B2 (en) 2018-06-06 2020-04-07 Arcom Digital Patent, Llc Detection of CPD from signals captured at remote PHY device
US11150409B2 (en) 2018-12-27 2021-10-19 GenXComm, Inc. Saw assisted facet etch dicing
WO2020208400A1 (en) 2019-04-09 2020-10-15 Telefonaktiebolaget Lm Ericsson (Publ) Eigenvalue-based passive intermodulation detection
US11159197B2 (en) * 2019-04-29 2021-10-26 Qualcomm Incorporated Self-interference cancellation for in-band full-duplex wireless communication
US10727945B1 (en) 2019-07-15 2020-07-28 GenXComm, Inc. Efficiently combining multiple taps of an optical filter
US11082732B2 (en) 2019-08-07 2021-08-03 Arcom Digital Patent, Llc Detection of CPD using leaked forward signal
US11215755B2 (en) 2019-09-19 2022-01-04 GenXComm, Inc. Low loss, polarization-independent, large bandwidth mode converter for edge coupling
US11539394B2 (en) 2019-10-29 2022-12-27 GenXComm, Inc. Self-interference mitigation in in-band full-duplex communication systems
US10992326B1 (en) 2020-05-19 2021-04-27 Nanosemi, Inc. Buffer management for adaptive digital predistortion
US11796737B2 (en) 2020-08-10 2023-10-24 GenXComm, Inc. Co-manufacturing of silicon-on-insulator waveguides and silicon nitride waveguides for hybrid photonic integrated circuits
US12001065B1 (en) 2020-11-12 2024-06-04 ORCA Computing Limited Photonics package with tunable liquid crystal lens
KR20230030345A (en) 2021-08-25 2023-03-06 삼성전자주식회사 Communication device, and operating method thereof
EP4332722A1 (en) 2021-09-16 2024-03-06 Samsung Electronics Co., Ltd. Electronic device comprising flexible display and control method thereof
US11838056B2 (en) 2021-10-25 2023-12-05 GenXComm, Inc. Hybrid photonic integrated circuits for ultra-low phase noise signal generators
KR102551590B1 (en) * 2022-02-23 2023-07-05 한화시스템 주식회사 Apparatus and method for transmitting multi-channel simultaneous hop signal in transmitter
CN115801029B (en) * 2023-02-08 2023-04-18 北京智联安科技有限公司 Method, apparatus and medium for canceling IM2 signal of zero intermediate frequency receiver

Family Cites Families (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61177033A (en) * 1985-01-31 1986-08-08 Nec Corp Same frequency radio communication system
JPH0771118B2 (en) * 1989-12-27 1995-07-31 三菱電機株式会社 Modulator
US5749051A (en) * 1996-07-18 1998-05-05 Ericsson Inc. Compensation for second order intermodulation in a homodyne receiver
JP3441311B2 (en) * 1996-09-13 2003-09-02 株式会社東芝 Receiving machine
US6009129A (en) * 1997-02-28 1999-12-28 Nokia Mobile Phones Device and method for detection and reduction of intermodulation distortion
KR100251387B1 (en) * 1997-12-29 2000-04-15 윤종용 Receipt circuit of mobile communication terminal including feed-forward linearizer
GB9804835D0 (en) * 1998-03-06 1998-04-29 Wireless Systems Int Ltd Predistorter
AUPP261898A0 (en) * 1998-03-27 1998-04-23 Victoria University Of Technology Dc offset and im2 removal in direct conversion receivers
US6236286B1 (en) * 1999-06-08 2001-05-22 Lucent Technologies, Inc. Integrated on-board automated alignment for a low distortion amplifier
US6266517B1 (en) * 1999-12-30 2001-07-24 Motorola, Inc. Method and apparatus for correcting distortion in a transmitter
US6194942B1 (en) * 2000-01-19 2001-02-27 Cable Vision Electronics Co., Ltd. Predistortion circuit for linearization of signals
US6941258B2 (en) 2000-03-17 2005-09-06 Interuniversitair Microelektronica Centrum Method, apparatus and computer program product for determination of noise in mixed signal systems
KR100398664B1 (en) * 2001-02-21 2003-09-19 주식회사 쏠리테크 Device for Linearizing Power Amplifier with Predistortion in IF Band
US7046972B2 (en) * 2001-04-10 2006-05-16 Matsushita Electric Industrial Co., Ltd. Predistortion linearizer and predistortion distortion compensation method, program, and medium
US7346134B2 (en) 2001-05-15 2008-03-18 Finesse Wireless, Inc. Radio receiver
US7209528B2 (en) * 2001-06-01 2007-04-24 National Semiconductor, Inc. Over-sampling A/D converter with adjacent channel power detection
JP2002368888A (en) 2001-06-11 2002-12-20 Hitachi Ltd Intercom system
US7088955B2 (en) 2001-07-16 2006-08-08 Qualcomm Inc. Method and apparatus for acquiring and tracking pilots in a CDMA communication system
US6873832B2 (en) * 2001-09-28 2005-03-29 Broadcom Corporation Timing based LNA gain adjustment in an RF receiver to compensate for intermodulation interference
US6646449B2 (en) * 2001-12-28 2003-11-11 Nokia Corporation Intermodulation detector for a radio receiver
US7657241B2 (en) * 2002-02-01 2010-02-02 Qualcomm, Incorporated Distortion reduction calibration
US7127211B2 (en) * 2002-02-21 2006-10-24 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for reduced intermodulation distortion in a radio transceiver
JP4175503B2 (en) * 2003-04-18 2008-11-05 ソニー・エリクソン・モバイルコミュニケーションズ株式会社 Distortion compensation circuit and transmitter
CN1799203B (en) 2003-06-04 2010-12-01 Nxp股份有限公司 Adaptive intermodulation distortion filter for zero-IF receivers
JP2007538471A (en) 2004-05-20 2007-12-27 トムソン ライセンシング Distortion removing apparatus and method
JP2006148592A (en) * 2004-11-19 2006-06-08 Sony Corp Cofdm modulation signal receiver
US8014476B2 (en) 2005-11-07 2011-09-06 Qualcomm, Incorporated Wireless device with a non-compensated crystal oscillator
US8149896B2 (en) 2006-01-04 2012-04-03 Qualcomm, Incorporated Spur suppression for a receiver in a wireless communication system
US8170487B2 (en) 2006-02-03 2012-05-01 Qualcomm, Incorporated Baseband transmitter self-jamming and intermodulation cancellation device
KR100710125B1 (en) * 2006-02-23 2007-04-20 지씨티 세미컨덕터 인코포레이티드 Tranceiver circuit for compensating iq mismatch and carrier leakage and control method of the same
FR2898746A1 (en) 2006-03-17 2007-09-21 St Microelectronics Sa Leakage signal effect reducing method for e.g. full duplex transmission system, involves digitally suppressing estimated digital component of second order intermodulation signal incident in base band on reception channel
US8290100B2 (en) * 2006-08-08 2012-10-16 Qualcomm Incorporated Interference detection and mitigation
US8098779B2 (en) * 2006-08-08 2012-01-17 Qualcomm Incorporated Interference detection and mitigation

Also Published As

Publication number Publication date
KR101070573B1 (en) 2011-10-05
EP2057745B1 (en) 2011-04-06
DE602007013771D1 (en) 2011-05-19
WO2008021815A1 (en) 2008-02-21
US7876867B2 (en) 2011-01-25
JP2010500831A (en) 2010-01-07
JP5155314B2 (en) 2013-03-06
EP2057745A1 (en) 2009-05-13
CN101502007B (en) 2013-01-23
KR20090039834A (en) 2009-04-22
TW200818797A (en) 2008-04-16
CN101502007A (en) 2009-08-05
US20080039045A1 (en) 2008-02-14

Similar Documents

Publication Publication Date Title
ATE504981T1 (en) DETECTION AND REDUCTION OF INTERMODULATION DISTORTION
TW200943747A (en) Interference detection and mitigation
TW200625987A (en) Audio receiver and volume reminder method
DE602004027374D1 (en) REKTKONVERSIONSEMPFÄNGER
NO20082348L (en) Voting and cross-calling
ATE427586T1 (en) SIGNAL RECEIVER AND MOBILE COMMUNICATION DEVICE
ZA200803057B (en) Radio communication device comprising at least one radio communication module and one sim card, corresponding radio communication module and sim card
WO2007134197A3 (en) If jammers are detected the signal level at which lna gain is changed is altered
TW200627808A (en) Digital signal processor, receiver, corrector and methods for the same
HK1121616A1 (en) Display device on/off detection methods and apparatus
GB2473376A (en) Signal detection and blocking for voice processing equipment
AR047911A1 (en) ATMOSPHERIC DOWNLOAD DETECTION
UA95507C2 (en) Method and apparatus for distributed spectrum sensing for wireless communication
AR047825A1 (en) ATMOSPHERIC DOWNLOAD DETECTION
WO2008133751A3 (en) Jammer detection and suppression for wireless communication
DE602005016413D1 (en) MPF ERROR FAILURE IN OBSERVATION PROCESSING
WO2009148835A3 (en) Combining multiple frequency modulation (fm) signals in a receiver
TW200633393A (en) Semiconductor device and electronic apparatus using the same
GB0809633D0 (en) Broadcast receiver system
EP1727289A3 (en) Vehicle-mounted receiving apparatus for reducing distortion, improving reception sensitivity, and saving power
TW200629754A (en) Method and apparatus for guard interval detection in multi-carrier receiver
ATE460779T1 (en) METHOD AND DEVICE FOR INTERFERENCE SUPPRESSION IN WIRELESS RECEIVER
TW200710406A (en) Leakage current detection apparatus and leakage current detection method
DE602004020684D1 (en) ND METHOD FOR IMPROVING TERMINAL OPERATION
TW200729949A (en) Receiver apparatus and receiver system

Legal Events

Date Code Title Description
RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties